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Checks before increase Domain / forest functional level RRS feed

  • Question

  • We currently have a Windows 2003 Domain / forest functional level and are looking to increase this to 2008R2 as we are going to add some Windows 2016 servers (still have a lot of 2008R2 servers at present) are there any caveats I should be aware of before doing this.

    As mentioned we still have a lot of 2008 servers which we are gradually phasing out. We are pretty certain they are all R2 however if one is still a 2008 non R2 I presume if I try to upgrade the functional level to R2 it will come up with an warning if there are any non R2 DC's

    Wednesday, July 17, 2019 9:30 AM

All replies

  • We are pretty certain they are all R2 however if one is still a 2008 non R2 I presume if I try to upgrade the functional level to R2 it will come up with an warning if there are any non R2 DC's

    Probably, but I would recommend double checking the version of your Domain Controllers anyway. 

    Upgrading domain/forest functional level in most cases doesn't have any impact, unless if you are using any old or third party software that is somehow related to the current functional level. 



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    Wednesday, July 17, 2019 10:02 AM
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    Just do it.

    Wednesday, July 31, 2019 7:34 AM
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